| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Paruch, Patrycja
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2023Mapping the complex evolution of ferroelastic/ferroelectric domain patterns in epitaxially strained PbTiO3 heterostructurescitations
- 2021Local and correlated studies of humidity-mediated ferroelectric thin film surface charge dynamics
- 2021Local and correlated studies of humidity-mediated ferroelectric thin film surface charge dynamicscitations
- 2020Full control of polarization in ferroelectric thin films using growth temperature to modulate defectscitations
- 2017Non-Ising and chiral ferroelectric domain walls revealed by nonlinear optical microscopycitations
- 2016A single probe for imaging photons, electrons and physical forcescitations
- 2014Effect of thermal annealing on ferroelectric domain structures in poly(vinylidene-fluoride-trifluorethylene) Langmuir-Blodgett thin filmscitations
Places of action
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article
Non-Ising and chiral ferroelectric domain walls revealed by nonlinear optical microscopy
Abstract
International audience ; The properties of ferroelectric domain walls can significantly differ from those of their parentmaterial. Elucidating their internal structure is essential for the design of advanced devicesexploiting nanoscale ferroicity and such localized functional properties. Here, we probe theinternal structure of 180° ferroelectric domain walls in lead zirconate titanate (PZT) thin filmsand lithium tantalate bulk crystals by means of second-harmonic generation microscopy. Inboth systems, we detect a pronounced second-harmonic signal at the walls. Local polarimetryanalysis of this signal combined with numerical modelling reveals the existence of a planarpolarization within the walls, with Ne´el and Bloch-like configurations in PZT and lithiumtantalate, respectively. Moreover, we find domain wall chirality reversal at line defectscrossing lithium tantalate crystals. Our results demonstrate a clear deviation from the idealIsing configuration that is traditionally expected in uniaxial ferroelectrics, corroborating recenttheoretical predictions of a more complex, often chiral structure.